Species-selective confinement of atoms dressed with multiple radiofrequencies

Journal article

Methods to manipulate the individual constituents of an ultracold quantum gas mixture are essential tools for a number of applications, such as the direct quantum simulation of impurity physics. We investigate a scheme in which species-selective control is achieved using magnetic potentials dressed with multiple radiofrequencies, exploiting the different Landé gF-factors of the constituent atomic species. We describe a mixture dressed with two frequencies, where atoms are confined in harmonic potentials with a controllable degree of overlap between the two atomic species. This is then extended to a four radiofrequency scheme in which a double well potential for one species is overlaid with a single well for the other. The discussion is framed with parameters that are suitable for a 85Rb and 87Rb mixture, but is readily generalised to other combinations.

Authors: Bentine, E; Harte, T; Luksch, K; Barker, A; Mur-Petit, J

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: IOP Publishing
• Journal: Journal of Physics B: Atomic, Molecular and Optical Physics
• Volume: 50
• Issue: 9
• Article number: 094002
• Publication date: 2017-04-18
• Acceptance date: 2017-03-14
• DOI: 10.1088/1361-6455/aa67ce
• EISSN: 1361-6455
• ISSN: 0953-4075
• Keywords: species-selective trapping; boson mixtures; ultracold gases; Bose–Einstein condensation; rf-dressed potentials